Stella Bianca: produzione frese a tazza, frese rotative, allargafori e seghe circolari

Traditional Conical Drill Bits

The traditional Conical Drill Bits (without steps) are made starting from a HSS M2 steel bar through turning, milling and grinding working operations. We manufacture the Kobalt version, too, made starting from a HSS M35 Cobalt steel bar. We select the best European steels and through the most advanced vacuum hardening processes we exalt their qualities giving them 64/65 HRC hardness. The Kobalt version lasts very long. The final grinding operation with relief is made by up-to-date NC grinding machines.
In the most cases the traditional Conical Drill Bits are the best solution to get holes of different sizes in the metal by using one only tool, whether starting from a preexistent hole or making it at the moment. At a correct cutting speed they can be also used with stainless steel, thermoplastic, hard plastics, resins and wood. If the recommended cutting speeds are respected and lubricating oil is used the traditional Conical Drill Bits last very long.

Stella Bianca traditional Conical Drill Bits (whether HSS or HSS E-Kobalt) are available in the TiN and TiAlN version, too. TiN traditional Conical Drill Bits have on a film of Titanium Nitride that makes the tool very tough and its skidding on the surfaces easier. TiAlN traditional Conical Drill Bits have on a film of Titanium Nitride and Aluminium that makes them frictionless and prevent the cutting edges from stoppage. Thanks to this feature they are very good in working nonferrous metals, abrasive and gumming materials. They can tolerate very high working temperatures (up to 800°).